The key feature of the short router is that it can route non-orthogonally (note the pipeline from the tank in the image in "Header Routing").

The short router routes pipes that connect closely spaced endpoints. Generally, this length is approximately the allowable unsupported length for the pipe. The calculated unsupported length for a pipe is 16.5 inches of length for every inch of diameter (419 millimeters of length for every 25 millimeters of diameter.)

There are five cases considered by the short router (as each case has multiple routing options, the basic examples are provided.)

1. When the vicinity routes are parallel and in the same direction:

   Table 1. Parallel vicinity routes with offsets in one and two directions

   Vicinity Offset in One Direction
   Vicinity Offset in Two Directions
   Top View	Front View
   Right View

2. When the vicinity routes are parallel, with opposing directions, and do not overlap:

   Table 2. Parallel-opposing vicinity routes with varied amounts of offset

   Small Perpendicular Vicinity Offset

   Medium Perpendicular Vicinity Offset

   ViewLarge Perpendicular Vicinity Offset in Two Directions

   Top View

   Side View

3. When the vicinity routes are parallel, in opposing directions, and do overlap:

   Table 3. Parallel-opposing-overlapping vicinity routes with varied offsets

   Medium Perpendicular Vicinity Offset

   ViewLarge Perpendicular Vicinity Offset in Two Directions

   Top View

   Side View

4. When the vicinity routes are coplanar and perpendicular:

   Table 4. Perpendicular vicinity routes

   Takeoffs Projected To Intersection Point

   Intersecting Takeoffs

5. When the vicinity routes are perpendicular, overlapping, and are not coplanar the short router will consider the case if the orthogonal distance between the routes is less than two times the length of a long-radius elbow:

   Table 5. Perpendicular, non-coplanar vicinity routes

   Front View

   Side View

6. When multi-point vicinity routing rules come within two elbows of each other. In this case, the short router will truncate the vicinity paths at the closest points and connect those points based on the short router logic.
   

   Truncated vicinity routes.